CN214888998U

CN214888998U - Ammonia spraying regulating valve

Info

Publication number: CN214888998U
Application number: CN202121347976.8U
Authority: CN
Inventors: 吕同超
Original assignee: Beijing Xinruiji Energy Technology Co ltd
Current assignee: Beijing Xinruiji Energy Technology Co ltd
Priority date: 2021-06-17
Filing date: 2021-06-17
Publication date: 2021-11-26
Anticipated expiration: 2031-06-17

Abstract

The utility model discloses an ammonia spraying regulating valve, which belongs to the technical field of regulating valves and comprises a valve body, a cavity is arranged in the valve body, an air inlet channel is arranged on one side of the cavity, an air outlet channel is arranged on the other side of the cavity, and by arranging the air inlet channel, the air outlet channel, a valve core, a valve rod, an external thread and a thread bush, when the ammonia spraying amount needs to be increased, the valve rod is rotated, the valve rod drives the valve core to move upwards in the cavity, the contact area between the valve core and the air outlet channel is reduced, the ammonia spraying amount is increased, when the ammonia spraying amount is reduced, the valve rod is rotated reversely, when the regulating valve needs to be closed, the valve rod is rotated reversely until the valve core completely blocks the air inlet channel, the regulating valve is closed, the valve core and the cavity are completely attached, zero leakage can be realized in the regulating process and in the full-off state, and the valve rod is positioned on the central axis of the chamber, so that the adjustment is more linear.

Description

Ammonia spraying regulating valve

Technical Field

The utility model belongs to the technical field of the governing valve, concretely relates to spout ammonia governing valve.

Background

The working condition of ammonia is spouted in denitration requires accurate ammonia spouting, and the ammonia volume of spouting is too big, causes the waste, and undersize NOx (also be, nitrogen oxide) can not discharge up to standard again, and traditional little flow control valve mostly utilizes to change case shape to the flow of regulating valve, when meetting the flow very little, just need to do very little the just can reach required little flow to the case.

For the realization adjusts the ammonia of small flow among the prior art, will spout the ammonia governing valve and do very little, lead to the adjustment variation of governing valve itself, the adjustment is difficult to obtain guaranteeing, and the governing valve adopts integrated into one piece formula structure mostly, and is comparatively inconvenient during the dismouting when maintenance or clearance.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model aims to provide a: adjust for the realization to the ammonia of small flow in order to solve, will spout the ammonia governing valve and do very little, lead to the adjustment variation of governing valve itself, the adjustment is difficult to obtain guaranteeing, and the governing valve adopts integrated into one piece formula structure mostly, comparatively inconvenient problem during the dismouting when maintenance or clearance, the utility model provides a spout the ammonia governing valve.

(II) technical scheme

The utility model discloses a realize above-mentioned purpose and specifically adopt following technical scheme:

an ammonia spraying regulating valve comprises a valve body, wherein a cavity is formed in the valve body, an air inlet channel is formed in one side of the cavity, an air outlet channel is formed in the other side of the cavity, an air inlet pipe is fixedly connected to one side, close to the air inlet channel, of the outer surface of the valve body, an air outlet pipe is fixedly connected to one side, close to the air outlet channel, of the outer surface of the valve body, a valve core is movably connected to the inner side of the cavity, a valve rod is fixedly connected to the top of the valve core through bolts, external threads are formed in the outer surface of the valve rod, a valve cover is fixedly connected to the upper portion, close to the cavity, of the outer surface of the valve body, a packing cavity is formed in the valve cover, graphite packing is arranged in the packing cavity, a packing gland is fixedly connected to the top of the packing cavity, a support frame is fixedly connected to the top of the packing gland, and a thread sleeve is fixedly connected to the top of the support frame, and the external thread on the outer surface of the valve rod is in threaded connection with the threaded sleeve.

Further, the top fixedly connected with fixture block of valve rod, the surface of fixture block is provided with the hand wheel, and the fixture block can be convenient for carry out the dismouting to the hand wheel, and the operator can be convenient for to the hand wheel rotates the valve rod.

Further, the outer surface of the valve rod is close to a limiting piece fixedly connected to the lower portion of the external thread, and the limiting piece can prevent the valve rod from moving downwards excessively.

Furthermore, one side of the air inlet pipe and one side of the air outlet pipe are fixedly connected with connecting plates, one side of each connecting plate is provided with a connecting hole, and the connecting plates and the connecting holes can facilitate the connection of the ammonia spraying regulating valve with an external air pipe.

Further, the bottom fixedly connected with base of valve body, the bottom fixedly connected with bottom of base can be convenient for clear up or maintain the regulating valve after the bottom is pulled down.

Furthermore, the surfaces of the base and the bottom cover are provided with positioning holes, positioning bolts are arranged inside the positioning holes, and the positioning holes and the positioning bolts can be used for conveniently disassembling and assembling the bottom cover.

Furthermore, sealing rings are arranged between the base and the bottom cover and between the valve body and the valve cover, and the sealing gaskets can achieve the effect of preventing air leakage.

Further, a fastening bolt is fixedly connected between the valve body and the valve cover, a fastening nut is arranged at one end of the fastening bolt, and the fastening bolt and the fastening nut can be used for conveniently disassembling and assembling the valve cover.

(III) advantageous effects

The utility model has the advantages as follows:

1. the ammonia spraying regulating valve comprises a cavity, an air inlet channel, an air outlet channel, an air inlet pipe, an air outlet pipe, a valve core, a valve rod, an external thread, a support frame and a thread sleeve, wherein when the ammonia spraying amount needs to be increased, an operator rotates the valve rod, the external thread rotates in the thread sleeve, the valve rod drives the valve core to move upwards in the cavity, so that the contact area between the valve core and the air outlet channel is reduced, the aim of increasing the ammonia spraying amount is fulfilled, when the ammonia spraying amount needs to be reduced, the valve rod is reversely rotated, the valve rod drives the valve core to move downwards in the cavity, so that the contact area between the valve core and the air outlet channel is increased, the aim of reducing the ammonia spraying amount is fulfilled, when the regulating valve needs to be closed, the valve rod is reversely rotated until the valve core completely blocks the air inlet channel, the regulating valve is closed, the operation is simple and convenient, the valve core and the cavity are completely attached, zero leakage can be realized in the regulating process and in the full-close state, and the valve rod is positioned on the central axis of the chamber, so that the adjustment is more linear.

2. This spout ammonia governing valve, through bottom, locating hole, positioning bolt, fastening bolt and fastening nut's setting, when needs clear up or maintain the governing valve, the operator takes out positioning bolt from the locating hole, can take off the bottom from the base, unscrews fastening nut to take out fastening bolt, can remove the valve gap from the valve body, thereby clear up or maintain the governing valve, and is simple convenient, raises the efficiency.

Drawings

Fig. 1 is a schematic view of an axial measurement structure of the present invention;

FIG. 2 is a schematic view of the cross-sectional axial measurement structure of the present invention;

fig. 3 is an enlarged schematic view of a portion a of fig. 2 according to the present invention;

fig. 4 is an enlarged schematic view of the structure of fig. 2B according to the present invention;

fig. 5 is an enlarged schematic view of the structure at C in fig. 2 according to the present invention.

Reference numerals: 1. a valve body; 2. a chamber; 3. an air intake passage; 4. an air outlet channel; 5. an air inlet pipe; 6. an air outlet pipe; 7. a valve core; 8. a valve stem; 9. an external thread; 10. a valve cover; 11. a packing cavity; 12. packing graphite packing; 13. a packing gland; 14. a support frame; 15. a threaded sleeve; 16. a clamping block; 17. a hand wheel; 18. a limiting sheet; 19. a connecting plate; 20. connecting holes; 21. a base; 22. a bottom cover; 23. positioning holes; 24. positioning the bolt; 25. a seal ring; 26. fastening a bolt; 27. and (5) tightening the nut.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1

Referring to fig. 1-3, the ammonia spraying regulating valve comprises a valve body 1, a chamber 2 is arranged inside the valve body 1, an air inlet channel 3 is arranged on one side of the chamber 2, an air outlet channel 4 is arranged on the other side of the chamber 2, an air inlet pipe 5 is fixedly connected to one side of the outer surface of the valve body 1 close to the air inlet channel 3, an air outlet pipe 6 is fixedly connected to one side of the outer surface of the valve body 1 close to the air outlet channel 4, a valve core 7 is movably connected inside the chamber 2, the top of the valve core 7 is fixedly connected with a valve rod 8 through a bolt, an external thread 9 is arranged on the outer surface of the valve rod 8, a valve cover 10 is fixedly connected to the upper side of the outer surface of the valve body 1 close to the chamber 2, a packing cavity 11 is arranged inside the packing cavity 11, a graphite packing 12 is arranged inside the packing cavity 11, a packing gland 13 is fixedly connected to the top of the packing cavity 11, and a support frame 14 is fixedly connected to the top of the packing gland 13, the top of the support frame 14 is fixedly connected with a threaded sleeve 15, and the external thread 9 on the outer surface of the valve rod 8 is in threaded connection with the threaded sleeve 15.

In the embodiment, through the arrangement of the chamber 2, the gas inlet channel 3, the gas outlet channel 4, the gas inlet pipe 5, the gas outlet pipe 6, the valve core 7, the valve rod 8, the external thread 9, the support frame 14 and the thread bushing 15, when the ammonia spraying amount needs to be increased, an operator rotates the valve rod 8, the external thread 9 rotates in the thread bushing 15, the valve rod 8 drives the valve core 7 to move upwards in the chamber 2, so that the contact area between the valve core 7 and the gas outlet channel 4 is reduced, and the purpose of increasing the ammonia spraying amount is achieved, when the ammonia spraying amount needs to be reduced, the valve rod 8 is rotated reversely, so that the valve core 7 is driven by the valve rod 8 to move downwards in the chamber 2, so that the contact area between the valve core 7 and the gas outlet channel 4 is increased, and the purpose of reducing the ammonia spraying amount is achieved, when the regulating valve needs to be closed, the valve rod 8 is rotated reversely until the valve core 7 completely blocks the gas inlet channel 3, the purpose of closing the regulating valve is achieved, and the operation is simple and convenient, the valve core 7 is completely attached to the cavity 2, zero leakage can be achieved in the adjusting process and in the fully closed state, and the valve rod 8 is located on the central axis of the cavity 2, so that the adjustment is linear.

Example 2

Referring to fig. 2 to 5, the present embodiment is further optimized on the basis of embodiment 1, specifically, a fixture block 16 is fixedly connected to the top of the valve rod 8, and a hand wheel 17 is disposed on an outer surface of the fixture block 16.

Specifically, a limiting piece 18 is fixedly connected to the outer surface of the valve rod 8 below the external thread 9.

Specifically, one side of the air inlet pipe 5 and one side of the air outlet pipe 6 are both fixedly connected with a connecting plate 19, and one side of the connecting plate 19 is provided with a connecting hole 20.

Specifically, sealing rings 25 are arranged between the base 21 and the bottom cover 22 and between the valve body 1 and the valve cover 10.

In this embodiment, through the setting of fixture block 16, hand wheel 17, spacing piece 18, connecting plate 19, connecting hole 20 and sealing washer 25, the operator can be convenient for to hand wheel 17 rotatory valve rod 8, and fixture block 16 can carry out quick dismantlement and installation to hand wheel 17, and spacing piece 18 can be spacing moving down of valve rod 8, avoids case 7 to move down excessively, and connecting plate 19 and connecting hole 20 can be convenient for the external trachea of governing valve.

Example 3

Referring to fig. 1-4, the present embodiment is optimized based on the

embodiment

1 or 2, specifically, a base 21 is fixedly connected to the bottom of the valve body 1, and a bottom cover 22 is fixedly connected to the bottom of the base 21.

Specifically, the surfaces of the base 21 and the bottom cover 22 are both provided with positioning holes 23, and positioning bolts 24 are arranged inside the positioning holes 23.

Specifically, a fastening bolt 26 is fixedly connected between the valve body 1 and the valve cover 10, and a fastening nut 27 is arranged at one end of the fastening bolt 26.

In this embodiment, through the setting of bottom 22, locating hole 23, positioning bolt 24, fastening bolt 26 and fastening nut 27, when needing to clear up or maintain the regulating valve, the operator takes out positioning bolt 24 from locating hole 23, can take off bottom 22 from base 21, unscrew fastening nut 27 to take out fastening bolt 26, can remove valve gap 10 from valve body 1, thereby clear up or maintain the regulating valve, and is simple convenient, raises the efficiency.

To sum up: the utility model discloses, when ammonia volume is spouted in needs increase, the operator rotates valve rod 8, external screw thread 9 rotates in thread bush 15, valve rod 8 drives case 7 and upwards moves in cavity 2, thereby reduce the area of contact between case 7 and gas outlet channel 4, reach the purpose of increasing ammonia volume of spouting, when ammonia volume needs to be reduced, reverse rotation valve rod 8, make valve rod 8 drive case 7 and downwards move in cavity 2, thereby increase the area of contact between case 7 and gas outlet channel 4, reach the purpose of reducing ammonia volume of spouting, when the governing valve needs to be closed, reverse rotation valve rod 8, until case 7 blocks inlet channel 3 completely, realize the purpose of closing the governing valve, easy and simple to handle, case 7 and cavity 2 are laminated completely, can realize zero leakage under the regulation in-process and the state of closing entirely, and valve rod 8 is in the axis of cavity 2, make the regulation more linear, when the regulating valve needs to be cleaned or maintained, an operator takes out the positioning bolt 24 from the positioning hole 23, can take the bottom cover 22 from the base 21, unscrews the fastening nut 27 and takes out the fastening bolt 26, and can take the valve cover 10 from the valve body 1, so that the regulating valve is cleaned or maintained, and the regulating valve is simple, convenient and high in efficiency.

Above, only be the preferred embodiment of the present invention, not be used for limiting the present invention, the patent protection scope of the present invention is based on the claims, all the structural changes equivalent to the content of the description and drawings of the present invention should be included in the protection scope of the present invention.

Claims

1. Spout ammonia governing valve, including valve body (1), its characterized in that: a cavity (2) is formed in the valve body (1), an air inlet channel (3) is formed in one side of the cavity (2), an air outlet channel (4) is formed in the other side of the cavity (2), an air inlet pipe (5) is fixedly connected to one side, close to the air inlet channel (3), of the outer surface of the valve body (1), an air outlet pipe (6) is fixedly connected to one side, close to the air outlet channel (4), of the outer surface of the valve body (1), a valve core (7) is movably connected to the inside of the cavity (2), a valve rod (8) is fixedly connected to the top of the valve core (7) through a bolt, external threads (9) are arranged on the outer surface of the valve rod (8), a valve cover (10) is fixedly connected to the upper portion, close to the cavity (2), a packing cavity (11) is formed in the valve cover (10), and graphite packing (12) is arranged in the packing cavity (11), the packing device is characterized in that a packing gland (13) is fixedly connected to the top of the packing cavity (11), a support frame (14) is fixedly connected to the top of the packing gland (13), a threaded sleeve (15) is fixedly connected to the top of the support frame (14), and an external thread (9) and the threaded sleeve (15) on the outer surface of the valve rod (8) are in threaded connection.

2. The ammonia injection regulating valve of claim 1, wherein: the top of the valve rod (8) is fixedly connected with a clamping block (16), and a hand wheel (17) is arranged on the outer surface of the clamping block (16).

3. The ammonia injection regulating valve of claim 1, wherein: the outer surface of the valve rod (8) is close to the lower part of the external thread (9) and is fixedly connected with a limiting piece (18).

4. The ammonia injection regulating valve of claim 1, wherein: the air inlet pipe is characterized in that one side of the air inlet pipe (5) and one side of the air outlet pipe (6) are fixedly connected with a connecting plate (19), and one side of the connecting plate (19) is provided with a connecting hole (20).

5. The ammonia injection regulating valve of claim 1, wherein: the bottom fixedly connected with base (21) of valve body (1), the bottom fixedly connected with bottom (22) of base (21).

6. The ammonia injection regulating valve of claim 5, wherein: positioning holes (23) are formed in the surfaces of the base (21) and the bottom cover (22), and positioning bolts (24) are arranged inside the positioning holes (23).

7. The ammonia injection regulating valve of claim 6, wherein: and sealing rings (25) are arranged between the base (21) and the bottom cover (22) and between the valve body (1) and the valve cover (10).

8. The ammonia injection regulating valve of claim 1, wherein: and a fastening bolt (26) is fixedly connected between the valve body (1) and the valve cover (10), and a fastening nut (27) is arranged at one end of the fastening bolt (26).